Man page - clearenv(3)
Packages contains this manual
- __malloc_initialize_hook(3)
- getpwuid(3)
- frexpl(3)
- fchown(2)
- setttyent(3)
- pthread_attr_setstacksize(3)
- calloc(3)
- clog(3)
- seteuid(2)
- res_nquerydomain(3)
- y0l(3)
- catanl(3)
- catanh(3)
- inet_addr(3)
- getcwd(2)
- epoll_create1(2)
- atol(3)
- pciconfig_write(2)
- htonl(3)
- timer_settime(2)
- munmap(2)
- cexpl(3)
- rt_sigsuspend(2)
- msgctl(2)
- tan(3)
- get_mempolicy(2)
- roundf(3)
- towctrans(3)
- xdr_opaque(3)
- psignal(3)
- error_at_line(3)
- xdrmem_create(3)
- select(2)
- getdate_r(3)
- getprotobyname_r(3)
- nrand48_r(3)
- inet_netof(3)
- inet_ntoa(3)
- nextafterl(3)
- innetgr(3)
- on_exit(3)
- expm1l(3)
- strfmon(3)
- strdup(3)
- getservbyport(3)
- arch_prctl(2)
- j0(3)
- wait4(2)
- personality(2)
- bpf(2)
- pvalloc(3)
- getresuid32(2)
- des_setparity(3)
- prctl(2)
- clog10(3)
- aio_init(3)
- pthread_getconcurrency(3)
- csinl(3)
- linkat(2)
- vsscanf(3)
- isascii(3)
- xdr_union(3)
- nan(3)
- utimensat(2)
- ioctl_vt(2)
- _newselect(2)
- ldexpl(3)
- fabsf(3)
- chown(2)
- mkstemps(3)
- pthread_attr_getstacksize(3)
- listxattr(2)
- getpgrp(2)
- xdr_short(3)
- tcflush(3)
- pthread_cond_wait(3)
- argz_add(3)
- wcpncpy(3)
- reallocarray(3)
- llrintf(3)
- outsl(2)
- qsort(3)
- authnone_create(3)
- tzname(3)
- setresuid32(2)
- isspace(3)
- open_by_handle_at(2)
- drem(3)
- conjf(3)
- nanosleep(2)
- pthread_kill(3)
- putc(3)
- pthread_condattr_destroy(3)
- getpwuid_r(3)
- strverscmp(3)
- res_init(3)
- cacosl(3)
- qecvt_r(3)
- iswgraph(3)
- gethostbyname(3)
- ntohl(3)
- acct(2)
- asinl(3)
- envz_merge(3)
- strdupa(3)
- idle(2)
- getopt_long_only(3)
- hstrerror(3)
- fanotify_init(2)
- fputs_unlocked(3)
- sleep(3)
- vfprintf(3)
- scalb(3)
- nanl(3)
- lchown32(2)
- getnetent_r(3)
- fcntl(2)
- inw(2)
- rintl(3)
- arc4random(3)
- getsockopt(2)
- ilogbl(3)
- clog2(3)
- encrypt(3)
- sqrtf(3)
- isspace_l(3)
- tanl(3)
- cfmakeraw(3)
- assert(3)
- strtoull(3)
- xdrstdio_create(3)
- optopt(3)
- setrlimit(2)
- lround(3)
- xdr_accepted_reply(3)
- fmin(3)
- mq_notify(3)
- svcerr_auth(3)
- sbrk(2)
- recv(2)
- mq_unlink(2)
- strxfrm(3)
- ctan(3)
- atoi(3)
- xcrypt(3)
- sgetspent(3)
- fread(3)
- isless(3)
- ceil(3)
- pthread_cond_broadcast(3)
- oldfstat(2)
- outl(2)
- times(2)
- wcslen(3)
- popen(3)
- wprintf(3)
- labs(3)
- getrpcbynumber(3)
- shmat(2)
- clock_gettime(2)
- btree(3)
- s390_sthyi(2)
- siggetmask(3)
- getgid32(2)
- puts(3)
- scalblnl(3)
- strpbrk(3)
- catanhl(3)
- vlimit(3)
- getrpcent(3)
- tgammal(3)
- strtoll(3)
- funlockfile(3)
- xdecrypt(3)
- pthread_key_delete(3)
- setgrent(3)
- wmemmove(3)
- gnu_dev_major(3)
- regexec(3)
- lrintl(3)
- __ppc_set_ppr_med(3)
- rmdir(2)
- io_getevents(2)
- request_key(2)
- ecvt(3)
- __ppc_mdoom(3)
- mktemp(3)
- key_gendes(3)
- le64toh(3)
- statvfs(3)
- rpc(3)
- getdate_err(3)
- munlockall(2)
- close(2)
- xdr_rejected_reply(3)
- dlerror(3)
- le32toh(3)
- feclearexcept(3)
- insque(3)
- clntraw_create(3)
- getutid(3)
- strtof(3)
- settimeofday(2)
- mkdir(2)
- rewind(3)
- logf(3)
- tmpnam(3)
- iswpunct(3)
- wcrtomb(3)
- epoll_pwait(2)
- getitimer(2)
- wordexp(3)
- clog2f(3)
- capset(2)
- strrchr(3)
- outsb(2)
- freeifaddrs(3)
- getwc_unlocked(3)
- ustat(2)
- bswap_16(3)
- program_invocation_short_name(3)
- ldiv(3)
- exp10f(3)
- vprintf(3)
- wcsncpy(3)
- iscntrl(3)
- readlink(2)
- semget(2)
- connect(2)
- psiginfo(3)
- epoll_ctl(2)
- removexattr(2)
- envz_strip(3)
- fgetxattr(2)
- atexit(3)
- putgrent(3)
- bswap(3)
- getegid32(2)
- qecvt(3)
- asinh(3)
- isfdtype(3)
- setenv(3)
- readdir(3)
- rtime(3)
- nearbyint(3)
- getgroups32(2)
- statx(2)
- modify_ldt(2)
- cpow(3)
- eventfd_read(3)
- sendfile64(2)
- getnetbyname(3)
- fremovexattr(2)
- uselib(2)
- inet(3)
- endutxent(3)
- clnt_spcreateerror(3)
- pututline(3)
- nexttowardl(3)
- getipnodebyaddr(3)
- fts_set(3)
- memmem(3)
- fmodl(3)
- setfsuid32(2)
- wordfree(3)
- fadvise64(2)
- getppid(2)
- qsort_r(3)
- toupper(3)
- getwc(3)
- fputws(3)
- mrand48(3)
- preadv(2)
- sincosf(3)
- fstatat64(2)
- dirfd(3)
- jnf(3)
- static_assert(3)
- wctype(3)
- vwarn(3)
- setfsent(3)
- listen(2)
- wcstok(3)
- argz_insert(3)
- select_tut(2)
- ctanl(3)
- getunwind(2)
- difftime(3)
- daylight(3)
- sigpause(3)
- wcscat(3)
- dlclose(3)
- __ppc_set_ppr_med_low(3)
- pread(2)
- fstatvfs(3)
- cbrtf(3)
- strnlen(3)
- sinhl(3)
- inl_p(2)
- setregid32(2)
- putwc(3)
- register_printf_type(3)
- nextafterf(3)
- opendir(3)
- strtod(3)
- tgamma(3)
- malloc_get_state(3)
- aio_write(3)
- timezone(3)
- xdr_pmaplist(3)
- sysfs(2)
- index(3)
- svcerr_noproc(3)
- envz(3)
- klogctl(3)
- pselect(2)
- get_current_dir_name(3)
- xdr_char(3)
- asinhf(3)
- preadv2(2)
- inotify_init1(2)
- pthread_attr_setstackaddr(3)
- getline(3)
- tanhf(3)
- rtnetlink(3)
- pkey_alloc(2)
- edata(3)
- stailq(3)
- isastream(2)
- setregid(2)
- copy_file_range(2)
- rcmd_af(3)
- futex(2)
- prof(2)
- siglongjmp(3)
- hdestroy(3)
- catan(3)
- pthread_cond_signal(3)
- mkfifoat(3)
- clntudp_create(3)
- getentropy(3)
- vsprintf(3)
- fabs(3)
- lseek64(3)
- pthread_setname_np(3)
- conjl(3)
- chroot(2)
- ccoshf(3)
- erand48_r(3)
- wcsnrtombs(3)
- rindex(3)
- fputc_unlocked(3)
- setresgid32(2)
- gettimeofday(2)
- cexp(3)
- inotify_add_watch(2)
- set_robust_list(2)
- nice(2)
- strtold(3)
- mq_getattr(3)
- xdr(3)
- getxattr(2)
- getrandom(2)
- splice(2)
- strerror(3)
- fcntl64(2)
- fnmatch(3)
- ungetwc(3)
- getspnam_r(3)
- clearenv(3)
- atan2(3)
- get_myaddress(3)
- open(2)
- pthread_setcancelstate(3)
- newlocale(3)
- open_memstream(3)
- setprotoent(3)
- logbf(3)
- ilogb(3)
- wmemcpy(3)
- tcsendbreak(3)
- be16toh(3)
- perfmonctl(2)
- strtoq(3)
- getgrgid_r(3)
- pthread_timedjoin_np(3)
- memfd_create(2)
- getttynam(3)
- mcheck_pedantic(3)
- _llseek(2)
- renameat2(2)
- ioperm(2)
- ecb_crypt(3)
- pthread_condattr_init(3)
- fminl(3)
- lio_listio(3)
- envz_add(3)
- setbuf(3)
- setkey(3)
- expm1(3)
- strtoul(3)
- getcwd(3)
- setutxent(3)
- getrpcent_r(3)
- unimplemented(2)
- fclose(3)
- epoll_create(2)
- getfsent(3)
- key_secretkey_is_set(3)
- vserver(2)
- vswprintf(3)
- sigsuspend(2)
- pututxline(3)
- clnt_freeres(3)
- cacheflush(2)
- ioprio_set(2)
- alarm(2)
- fgetc(3)
- __fpurge(3)
- getlogin_r(3)
- vfork(2)
- bstring(3)
- div(3)
- getrusage(2)
- gettid(2)
- dprintf(3)
- strtoumax(3)
- jrand48(3)
- iswcntrl(3)
- vwarnx(3)
- cacos(3)
- ccoshl(3)
- fesetexceptflag(3)
- res_nclose(3)
- shmop(2)
- mcheck_check_all(3)
- vscanf(3)
- tolower(3)
- landlock_add_rule(2)
- argz_next(3)
- lroundl(3)
- ruserok(3)
- glob(3)
- brk(2)
- rename(2)
- strcspn(3)
- sched_getscheduler(2)
- wcstoumax(3)
- dbopen(3)
- xdr_bytes(3)
- fegetenv(3)
- scalbf(3)
- pkey_free(2)
- fgetgrent(3)
- strchrnul(3)
- fork(2)
- log1pf(3)
- strtoimax(3)
- fputs(3)
- putspent(3)
- ttyname_r(3)
- iswlower(3)
- epoll_wait(2)
- minor(3)
- wcsspn(3)
- sendmmsg(2)
- pthread_attr_getsigmask_np(3)
- erand48(3)
- setpgrp(2)
- db(3)
- readv(2)
- cimagf(3)
- pthread_sigmask(3)
- getresuid(2)
- gamma(3)
- logwtmp(3)
- imaxabs(3)
- y1(3)
- swapoff(2)
- svcerr_weakauth(3)
- mbtowc(3)
- madvise(2)
- __fbufsize(3)
- swapon(2)
- towlower(3)
- asin(3)
- initgroups(3)
- svc_getreqset(3)
- pthread_attr_destroy(3)
- scalblnf(3)
- ispunct(3)
- casin(3)
- xdr_pmap(3)
- sigvec(3)
- dlmopen(3)
- localeconv(3)
- tcgetattr(3)
- mempcpy(3)
- clnt_perrno(3)
- clock_getcpuclockid(3)
- setaliasent(3)
- clock(3)
- ftok(3)
- svc_run(3)
- getsubopt(3)
- coshf(3)
- pow(3)
- getpwent(3)
- ntp_gettime(3)
- xdrrec_skiprecord(3)
- symlink(2)
- shmctl(2)
- mq_timedreceive(2)
- malloc(3)
- tgkill(2)
- l64a(3)
- unlockpt(3)
- mallopt(3)
- creal(3)
- syscalls(2)
- set_tid_address(2)
- exp2f(3)
- fstatfs(2)
- statfs(2)
- dreml(3)
- feenableexcept(3)
- ftw(3)
- fanotify_mark(2)
- clnt_sperror(3)
- realpath(3)
- sysconf(3)
- _syscall(2)
- set_mempolicy(2)
- mq_unlink(3)
- freehostent(3)
- rresvport_af(3)
- nl_langinfo_l(3)
- fmaxl(3)
- iscntrl_l(3)
- copysignf(3)
- llseek(2)
- bzero(3)
- ioctl_fsmap(2)
- remquof(3)
- malloc_trim(3)
- pthread_getattr_default_np(3)
- isalnum_l(3)
- mlock(2)
- nearbyintf(3)
- confstr(3)
- sinf(3)
- ioctl_eventpoll(2)
- sigstack(3)
- seed48_r(3)
- utmpname(3)
- malloc_stats(3)
- stpncpy(3)
- getservbyport_r(3)
- cabsl(3)
- isblank(3)
- sigprocmask(2)
- isinfl(3)
- isinff(3)
- pathconf(3)
- xdr_u_short(3)
- acos(3)
- timerfd_create(2)
- key_encryptsession(3)
- log2f(3)
- oldlstat(2)
- res_querydomain(3)
- memcmp(3)
- gethostbyaddr(3)
- sighold(3)
- gtty(2)
- xdr_void(3)
- getmsg(2)
- io_setup(2)
- ttyslot(3)
- recno(3)
- cuserid(3)
- nanf(3)
- pthread_getaffinity_np(3)
- if_indextoname(3)
- remainderf(3)
- putpwent(3)
- pow10f(3)
- pwritev(2)
- swapcontext(3)
- cfsetospeed(3)
- envz_remove(3)
- cosh(3)
- a64l(3)
- uselocale(3)
- yn(3)
- msgget(2)
- pthread_equal(3)
- prlimit(2)
- setspent(3)
- newfstatat(2)
- renameat(2)
- truncf(3)
- pthread_yield(3)
- tkill(2)
- islessequal(3)
- isnanf(3)
- sethostent(3)
- setvbuf(3)
- gnu_get_libc_release(3)
- atoll(3)
- getgrnam(3)
- get_robust_list(2)
- __ppc_yield(3)
- __memalign_hook(3)
- eventfd2(2)
- mq_setattr(3)
- tmpnam_r(3)
- pmap_getport(3)
- svcfd_create(3)
- getfsspec(3)
- setgid(2)
- getlogin(3)
- get_nprocs(3)
- canonicalize_file_name(3)
- pthread_mutexattr_getrobust(3)
- strerrorname_np(3)
- csinh(3)
- malloc_set_state(3)
- tcgetsid(3)
- ssignal(3)
- secure_getenv(3)
- significandl(3)
- wcschr(3)
- isgraph(3)
- pthread_mutexattr_gettype(3)
- creat(2)
- cabsf(3)
- __ppc_set_ppr_med_high(3)
- fchdir(2)
- backtrace_symbols(3)
- exp10l(3)
- euidaccess(3)
- sync_file_range(2)
- getutxline(3)
- isdigit(3)
- sinhf(3)
- lgetxattr(2)
- getaliasent(3)
- memrchr(3)
- io_submit(2)
- clnt_create(3)
- __setfpucw(3)
- _flushlbf(3)
- lcong48_r(3)
- clog10l(3)
- pmap_getmaps(3)
- memalign(3)
- xdr_authunix_parms(3)
- execl(3)
- getdate(3)
- cfsetispeed(3)
- tanhl(3)
- wmempcpy(3)
- outw_p(2)
- faccessat(2)
- rresvport(3)
- nextup(3)
- fgetgrent_r(3)
- getopt(3)
- xdr_vector(3)
- aio_error(3)
- frexpf(3)
- getpw(3)
- sscanf(3)
- mprotect(2)
- exp(3)
- sched_getaffinity(2)
- accept4(2)
- remainderl(3)
- pthread_key_create(3)
- endian(3)
- setmntent(3)
- get_phys_pages(3)
- argz(3)
- _exit(2)
- towupper_l(3)
- lrand48(3)
- csqrt(3)
- hdestroy_r(3)
- remquo(3)
- feof_unlocked(3)
- isprint(3)
- pivot_root(2)
- arc4random_uniform(3)
- strfroml(3)
- getdomainname(2)
- va_end(3)
- getresgid(2)
- cosf(3)
- endhostent(3)
- setgid32(2)
- ioctl_fs(2)
- getaddrinfo(3)
- fgetwc(3)
- lock(2)
- getservbyname_r(3)
- sys_nerr(3)
- insb(2)
- usleep(3)
- security(2)
- cfree(3)
- tanf(3)
- fprintf(3)
- pthread_mutexattr_setpshared(3)
- xprt_unregister(3)
- alphasort(3)
- getgrent(3)
- scandirat(3)
- iruserok(3)
- ttyname(3)
- tdestroy(3)
- strcasecmp(3)
- getpgid(2)
- drand48_r(3)
- mmap(2)
- sigtimedwait(2)
- pthread_once(3)
- mq_receive(3)
- pthread_mutexattr_setkind_np(3)
- iopl(2)
- s390_runtime_instr(2)
- lckpwdf(3)
- memmove(3)
- __fpending(3)
- mbsrtowcs(3)
- restart_syscall(2)
- memset(3)
- significandf(3)
- openat2(2)
- timeradd(3)
- conj(3)
- flockfile(3)
- madvise1(2)
- inet_aton(3)
- fstatfs64(2)
- fmax(3)
- fmemopen(3)
- fmaf(3)
- lseek(2)
- registerrpc(3)
- kexec_file_load(2)
- gammal(3)
- feof(3)
- pidfd_open(2)
- crealf(3)
- clogl(3)
- getutmp(3)
- umount(2)
- inet_pton(3)
- flistxattr(2)
- xdr_wrapstring(3)
- socketcall(2)
- setrpcent(3)
- rint(3)
- vm86(2)
- sincosl(3)
- getprotoent_r(3)
- mknod(2)
- getdents64(2)
- gai_cancel(3)
- srandom_r(3)
- getnetbyname_r(3)
- sigaddset(3)
- htole16(3)
- endnetent(3)
- nextafter(3)
- timerisset(3)
- getgrent_r(3)
- freeaddrinfo(3)
- endprotoent(3)
- mbind(2)
- sigorset(3)
- pthread_rwlockattr_setkind_np(3)
- cimag(3)
- waitid(2)
- abs(3)
- unlink(2)
- recvmsg(2)
- getaliasbyname(3)
- wctrans(3)
- kill(2)
- strtol(3)
- __ppc_set_ppr_very_low(3)
- membarrier(2)
- getnetbyaddr_r(3)
- writev(2)
- errx(3)
- tfind(3)
- clone3(2)
- __freading(3)
- outw(2)
- regfree(3)
- accept(2)
- timer_getoverrun(2)
- shmdt(2)
- svcerr_decode(3)
- getnameinfo(3)
- endusershell(3)
- execvpe(3)
- cbc_crypt(3)
- res_send(3)
- xdr_destroy(3)
- getcontext(3)
- pkey_mprotect(2)
- twalk_r(3)
- isalnum(3)
- timercmp(3)
- setxattr(2)
- pthread_cleanup_pop_restore_np(3)
- stat(2)
- isupper(3)
- vsyslog(3)
- strlen(3)
- pthread_attr_setinheritsched(3)
- xdr_inline(3)
- strtouq(3)
- raise(3)
- getpeername(2)
- capget(2)
- atanl(3)
- ferror_unlocked(3)
- isxdigit_l(3)
- modfl(3)
- pthread_mutexattr_init(3)
- pthread_mutexattr_getkind_np(3)
- phys(2)
- llabs(3)
- sched_rr_get_interval(2)
- asprintf(3)
- explicit_bzero(3)
- asctime(3)
- clone(2)
- munlock(2)
- __realloc_hook(3)
- atof(3)
- rt_tgsigqueueinfo(2)
- syslog(2)
- inet_makeaddr(3)
- epoll_pwait2(2)
- iswalpha(3)
- netlink(3)
- sched_setattr(2)
- sigdescr_np(3)
- access(2)
- getc_unlocked(3)
- dysize(3)
- inet_net_pton(3)
- sched_setparam(2)
- timerfd_settime(2)
- nexttowardf(3)
- expf(3)
- svcerr_progvers(3)
- getwchar(3)
- ftime(3)
- if_nametoindex(3)
- argz_add_sep(3)
- vasprintf(3)
- unlinkat(2)
- putenv(3)
- pthread_mutexattr_setrobust_np(3)
- error_message_count(3)
- setfsgid(2)
- cmsg(3)
- setpwent(3)
- cfgetospeed(3)
- end(3)
- pidfd_send_signal(2)
- scalbn(3)
- closelog(3)
- srandom(3)
- argz_replace(3)
- ioctl_tty(2)
- va_arg(3)
- towlower_l(3)
- isblank_l(3)
- remove(3)
- expl(3)
- fscanf(3)
- versionsort(3)
- pow10(3)
- hsearch(3)
- gethostid(3)
- fchownat(2)
- group_member(3)
- getchar_unlocked(3)
- getservbyname(3)
- pthread_mutexattr_destroy(3)
- setpgid(2)
- acosf(3)
- ctanhf(3)
- shm_open(3)
- towupper(3)
- getdents(2)
- chown32(2)
- hypotf(3)
- undocumented(3)
- drand48(3)
- csinf(3)
- ctime_r(3)
- setlinebuf(3)
- ulimit(3)
- spu_create(2)
- fcvt_r(3)
- ipc(2)
- ftruncate64(2)
- fdopen(3)
- svcerr_noprog(3)
- getrpcport(3)
- csin(3)
- sinh(3)
- nrand48(3)
- openpty(3)
- xdr_double(3)
- pthread_attr_getscope(3)
- vfscanf(3)
- catanhf(3)
- inb(2)
- wcpcpy(3)
- ldexp(3)
- getopt_long(3)
- strerrordesc_np(3)
- mbsinit(3)
- argz_stringify(3)
- setbuffer(3)
- byteorder(3)
- expm1f(3)
- pthread_attr_setscope(3)
- gnu_dev_makedev(3)
- pipe(2)
- updwtmp(3)
- fts_read(3)
- ioctl_fat(2)
- h_errno(3)
- sem_getvalue(3)
- iswupper(3)
- lrint(3)
- perror(3)
- xdr_u_int(3)
- timer_create(2)
- iswdigit(3)
- fgetspent(3)
- fwrite_unlocked(3)
- reboot(2)
- ftruncate(2)
- getutmpx(3)
- pwrite64(2)
- getauxval(3)
- xdr_pointer(3)
- getprotobynumber(3)
- svc_destroy(3)
- vmsplice(2)
- inet_network(3)
- readdir_r(3)
- setsockopt(2)
- rexec(3)
- flock(2)
- getw(3)
- mmap2(2)
- j1f(3)
- cprojf(3)
- mkstemp(3)
- symlinkat(2)
- tempnam(3)
- pthread_attr_getaffinity_np(3)
- gethostbyname_r(3)
- signalfd4(2)
- sys_siglist(3)
- erfc(3)
- truncate64(2)
- verr(3)
- pthread_kill_other_threads_np(3)
- eaccess(3)
- fsetpos(3)
- slist(3)
- pmap_unset(3)
- modf(3)
- ioctl_pipe(2)
- vfwprintf(3)
- getresgid32(2)
- statfs64(2)
- cexp2(3)
- stdio_ext(3)
- login_tty(3)
- xdr_long(3)
- dlsym(3)
- clog2l(3)
- malloc_usable_size(3)
- fegetexceptflag(3)
- basename(3)
- fwrite(3)
- vhangup(2)
- printf(3)
- setnetent(3)
- gethostbyname2(3)
- mallinfo2(3)
- signbit(3)
- clnt_broadcast(3)
- sched_yield(2)
- sem_open(3)
- sigsetjmp(3)
- cacoshl(3)
- sem_unlink(3)
- setresuid(2)
- signgam(3)
- putw(3)
- imaxdiv(3)
- regex(3)
- alloc_hugepages(2)
- modff(3)
- exp10(3)
- cprojl(3)
- utime(2)
- clogf(3)
- pthread_mutex_unlock(3)
- erff(3)
- ioctl_userfaultfd(2)
- iswprint(3)
- roundl(3)
- sqrtl(3)
- fpurge(3)
- getusershell(3)
- fcloseall(3)
- xdr_opaque_auth(3)
- gethostent_r(3)
- fgetwc_unlocked(3)
- fchmod(2)
- strptime(3)
- lutimes(3)
- htole64(3)
- putchar_unlocked(3)
- create_module(2)
- isascii_l(3)
- sigaction(2)
- stdout(3)
- geteuid32(2)
- xprt_register(3)
- freopen(3)
- ccosl(3)
- pthread_setschedprio(3)
- rt_sigaction(2)
- getmntent(3)
- putwchar_unlocked(3)
- logl(3)
- remque(3)
- unsetenv(3)
- sigwaitinfo(2)
- pthread_mutexattr_getrobust_np(3)
- initstate_r(3)
- getfsfile(3)
- exp2l(3)
- isatty(3)
- lgamma_r(3)
- lrintf(3)
- outb(2)
- __clone2(2)
- strcpy(3)
- clnt_call(3)
- hypot(3)
- fegetexcept(3)
- tcsetpgrp(3)
- gets(3)
- malloc_info(3)
- nextupf(3)
- pthread_attr_getdetachstate(3)
- getaliasent_r(3)
- fstat64(2)
- futimesat(2)
- dl_iterate_phdr(3)
- posix_madvise(3)
- endnetgrent(3)
- tolower_l(3)
- pthread_attr_setstack(3)
- pread64(2)
- sigsetops(3)
- stty(2)
- process_vm_readv(2)
- isfinite(3)
- gethostbyaddr_r(3)
- cproj(3)
- gai_strerror(3)
- key_decryptsession(3)
- inet_ntop(3)
- __ppc_mdoio(3)
- btowc(3)
- setstate_r(3)
- if_nameindex(3)
- fdetach(2)
- random_r(3)
- iruserok_af(3)
- truncl(3)
- clearerr(3)
- lgammaf(3)
- lfind(3)
- ctanf(3)
- strcat(3)
- pthread_attr_getschedpolicy(3)
- pthread_rwlockattr_getkind_np(3)
- sigrelse(3)
- daemon(3)
- pthread_setcanceltype(3)
- sigevent(7)
- iswalnum(3)
- pmap_set(3)
- stdin(3)
- ceilf(3)
- asctime_r(3)
- poll(2)
- svc_unregister(3)
- isnanl(3)
- carg(3)
- getprotobyname(3)
- arm_fadvise(2)
- optind(3)
- mount_setattr(2)
- dlvsym(3)
- ntp_adjtime(3)
- abort(3)
- pthread_getname_np(3)
- execlp(3)
- bind(2)
- bsearch(3)
- endspent(3)
- register_printf_specifier(3)
- landlock_create_ruleset(2)
- mkostemp(3)
- setgroups(2)
- toupper_l(3)
- argz_extract(3)
- sigblock(3)
- j0l(3)
- argz_delete(3)
- setusershell(3)
- getspnam(3)
- optarg(3)
- vm86old(2)
- sigandset(3)
- getdtablesize(3)
- getsockname(2)
- pthread_sigqueue(3)
- ptsname(3)
- j1(3)
- lgamma(3)
- getpagesize(2)
- pthread_mutex_lock(3)
- setsid(2)
- strncat(3)
- ioctl_kd(2)
- tsearch(3)
- mq_notify(2)
- fcvt(3)
- clntudp_bufcreate(3)
- getpwent_r(3)
- pthread_getspecific(3)
- memfrob(3)
- arc4random_buf(3)
- forkpty(3)
- powl(3)
- dlopen(3)
- stderr(3)
- set_thread_area(2)
- query_module(2)
- sem_close(3)
- strndup(3)
- __malloc_hook(3)
- setjmp(3)
- stdio(3)
- bdflush(2)
- sendto(2)
- mpx(2)
- fopen(3)
- setpriority(2)
- nextdownl(3)
- mprobe(3)
- oldstat(2)
- sem_destroy(3)
- bcopy(3)
- remap_file_pages(2)
- isgreaterequal(3)
- getpass(3)
- seekdir(3)
- break(2)
- authunix_create_default(3)
- tty_ioctl(4)
- process_madvise(2)
- endfsent(3)
- atoq(3)
- strftime(3)
- fts(3)
- getgrgid(3)
- isxdigit(3)
- ftello(3)
- regcomp(3)
- error(3)
- getenv(3)
- clnt_sperrno(3)
- readahead(2)
- y0(3)
- roundup(3)
- io_destroy(2)
- vsnprintf(3)
- lgammal(3)
- eventfd_write(3)
- pthread_mutex_trylock(3)
- lchown(2)
- dladdr(3)
- error_print_progname(3)
- pthread_mutexattr_settype(3)
- strspn(3)
- __after_morecore_hook(3)
- localtime(3)
- fsync(2)
- ether_aton(3)
- csinhl(3)
- trunc(3)
- xdr_u_char(3)
- syslog(3)
- y1f(3)
- ioctl_nsfs(2)
- wmemcmp(3)
- ffsll(3)
- ether_ntohost(3)
- bswap_32(3)
- umount2(2)
- sigfillset(3)
- landlock_restrict_self(2)
- pthread_join(3)
- sysinfo(2)
- clock_settime(2)
- llrint(3)
- s390_guarded_storage(2)
- getc(3)
- inet_lnaof(3)
- tcgetpgrp(3)
- clock_getres(2)
- etext(3)
- strfmon_l(3)
- putwc_unlocked(3)
- xdr_replymsg(3)
- scalbl(3)
- fdim(3)
- getspent(3)
- sem_timedwait(3)
- posix_fallocate(3)
- res_nmkquery(3)
- pthread_spin_unlock(3)
- mq_timedsend(2)
- opterr(3)
- getloadavg(3)
- strsignal(3)
- finite(3)
- inw_p(2)
- csinhf(3)
- execveat(2)
- seed48(3)
- sigset(3)
- setgroups32(2)
- logbl(3)
- wcsdup(3)
- clnt_geterr(3)
- sys_errlist(3)
- inotify_rm_watch(2)
- qgcvt(3)
- wcspbrk(3)
- sin(3)
- lookup_dcookie(2)
- s390_pci_mmio_read(2)
- wcscmp(3)
- getutxent(3)
- pciconfig_read(2)
- initstate(3)
- backtrace(3)
- putc_unlocked(3)
- fedisableexcept(3)
- rt_sigprocmask(2)
- clock_adjtime(2)
- fwprintf(3)
- jnl(3)
- grantpt(3)
- cimagl(3)
- getgrnam_r(3)
- remquol(3)
- swprintf(3)
- mbrtowc(3)
- fileno_unlocked(3)
- readlinkat(2)
- sigignore(3)
- strndupa(3)
- semctl(2)
- assert_perror(3)
- sendfile(2)
- shm_unlink(3)
- log(3)
- ungetc(3)
- erf(3)
- qfcvt(3)
- pthread_atfork(3)
- login(3)
- setservent(3)
- jrand48_r(3)
- wcsnlen(3)
- tcflow(3)
- pthread_cond_destroy(3)
- inl(2)
- srand48_r(3)
- erfcf(3)
- iconv(3)
- pthread_mutex_consistent_np(3)
- fabsl(3)
- pclose(3)
- nfsservctl(2)
- gai_error(3)
- wcsncmp(3)
- islower_l(3)
- iswctype(3)
- svc_register(3)
- arm_sync_file_range(2)
- strfry(3)
- strfromd(3)
- getttyent(3)
- rand(3)
- fchown32(2)
- ctime(3)
- fsetxattr(2)
- feupdateenv(3)
- random(3)
- getpwnam_r(3)
- sigwait(3)
- aio_fsync(3)
- mq_open(2)
- tanh(3)
- localtime_r(3)
- bsd_signal(3)
- strsep(3)
- mknodat(2)
- cexpf(3)
- cacosh(3)
- mbrlen(3)
- aio_cancel(3)
- mq_getsetattr(2)
- fdatasync(2)
- htons(3)
- sem_post(3)
- htobe16(3)
- vtimes(3)
- fgetpwent_r(3)
- getwchar_unlocked(3)
- mkdirat(2)
- dup(2)
- free_hugepages(2)
- feraiseexcept(3)
- lockf(3)
- userfaultfd(2)
- pthread_attr_setaffinity_np(3)
- memcpy(3)
- prlimit64(2)
- ferror(3)
- ldexpf(3)
- aio_return(3)
- adjtimex(2)
- execle(3)
- tailq(3)
- cabs(3)
- endaliasent(3)
- execvp(3)
- hasmntopt(3)
- if_freenameindex(3)
- signal(2)
- dn_comp(3)
- pthread_attr_getstack(3)
- ether_hostton(3)
- re_comp(3)
- cexp2l(3)
- getwd(3)
- llroundl(3)
- cos(3)
- pthread_mutex_consistent(3)
- isalpha_l(3)
- io_cancel(2)
- frexp(3)
- finitel(3)
- perf_event_open(2)
- pthread_exit(3)
- ioctl_console(2)
- timelocal(3)
- timersub(3)
- setresgid(2)
- semop(2)
- getgroups(2)
- envz_entry(3)
- xdr_u_long(3)
- seccomp(2)
- ftrylockfile(3)
- setuid(2)
- wcwidth(3)
- llround(3)
- cacoshf(3)
- pthread_attr_setschedpolicy(3)
- fgetpos(3)
- xdr_array(3)
- sprintf(3)
- wmemset(3)
- setcontext(3)
- copysignl(3)
- be64toh(3)
- matherr(3)
- hypotl(3)
- rawmemchr(3)
- fmodf(3)
- mount(2)
- mktime(3)
- stdarg(3)
- clnttcp_create(3)
- string(3)
- profil(3)
- clnt_perror(3)
- getpriority(2)
- regerror(3)
- clone2(2)
- getgid(2)
- pthread_spin_lock(3)
- iswblank(3)
- ftell(3)
- dup3(2)
- toascii(3)
- strncpy(3)
- mrand48_r(3)
- setstate(3)
- sigqueue(3)
- cpowf(3)
- setlogmask(3)
- sched_getcpu(3)
- htobe32(3)
- list(3)
- isdigit_l(3)
- chdir(2)
- fstat(2)
- pwritev2(2)
- get_thread_area(2)
- freelocale(3)
- acoshl(3)
- socketpair(2)
- scalbln(3)
- fpclassify(3)
- getpwnam(3)
- pthread_getcpuclockid(3)
- ioprio_get(2)
- strtok_r(3)
- exit_group(2)
- scalbnf(3)
- xdrrec_create(3)
- pthread_mutex_destroy(3)
- sqrt(3)
- dirname(3)
- exit(2)
- ulckpwdf(3)
- cargl(3)
- powerof2(3)
- simpleq(3)
- process_vm_writev(2)
- fdopendir(3)
- getpt(3)
- floorl(3)
- va_start(3)
- lcong48(3)
- strerror_l(3)
- xdrrec_eof(3)
- key_setsecret(3)
- lstat64(2)
- memfd_secret(2)
- sigreturn(2)
- casinhf(3)
- valloc(3)
- stat64(2)
- jn(3)
- sinl(3)
- pthread_testcancel(3)
- cfgetispeed(3)
- dup2(2)
- getnetent(3)
- pthread_setconcurrency(3)
- memccpy(3)
- rt_sigqueueinfo(2)
- ccosf(3)
- sincos(3)
- tcdrain(3)
- ccos(3)
- chmod(2)
- cacosf(3)
- lstat(2)
- pthread_spin_trylock(3)
- sigisemptyset(3)
- getrpcbyname(3)
- fpathconf(3)
- copysign(3)
- round(3)
- wmemchr(3)
- qfcvt_r(3)
- fattach(2)
- __fsetlocking(3)
- adjtime(3)
- makedev(3)
- des_crypt(3)
- iswspace(3)
- twalk(3)
- exec(3)
- link(2)
- fileno(3)
- endpwent(3)
- logb(3)
- wcscspn(3)
- console_ioctl(4)
- fgetpwent(3)
- setegid(2)
- clnt_destroy(3)
- getaddrinfo_a(3)
- svc_getargs(3)
- addmntent(3)
- globfree(3)
- islower(3)
- muntrace(3)
- clnt_pcreateerror(3)
- llrintl(3)
- clnt_control(3)
- fgetspent_r(3)
- strstr(3)
- putmsg(2)
- __fwritable(3)
- res_nsearch(3)
- fseeko(3)
- mq_timedreceive(3)
- log10(3)
- fexecve(3)
- gammaf(3)
- pthread_setschedparam(3)
- wcscpy(3)
- xdr_float(3)
- pthread_attr_setdetachstate(3)
- sem_wait(3)
- pow10l(3)
- re_exec(3)
- rand_r(3)
- putpmsg(2)
- getdelim(3)
- utimes(2)
- mq_close(3)
- setutent(3)
- creall(3)
- mq_send(3)
- telldir(3)
- powf(3)
- erfl(3)
- pthread_self(3)
- pselect6(2)
- unlocked_stdio(3)
- insw(2)
- cfsetspeed(3)
- argz_create(3)
- xdr_string(3)
- pthread_attr_getguardsize(3)
- finitef(3)
- setlocale(3)
- bcmp(3)
- fmtmsg(3)
- sendmsg(2)
- pthread_cleanup_push(3)
- inb_p(2)
- mmap64(3)
- getuid32(2)
- truncate(2)
- mlock2(2)
- fegetround(3)
- ugetrlimit(2)
- getprotobynumber_r(3)
- utmpxname(3)
- isinf(3)
- clearerr_unlocked(3)
- stime(2)
- nftw(3)
- duplocale(3)
- svcraw_create(3)
- svc_getcaller(3)
- ctanhl(3)
- cbrt(3)
- floorf(3)
- sethostid(3)
- sigemptyset(3)
- sigaltstack(2)
- mkfifo(3)
- lsearch(3)
- getservent_r(3)
- islessgreater(3)
- floor(3)
- argz_append(3)
- tzset(3)
- res_mkquery(3)
- fstatat(2)
- strchr(3)
- semtimedop(2)
- bindresvport(3)
- tcsetattr(3)
- warn(3)
- getservent(3)
- atanhl(3)
- tdelete(3)
- ynf(3)
- ether_ntoa_r(3)
- fesetenv(3)
- mq_timedsend(3)
- quotactl(2)
- init_module(2)
- rcmd(3)
- fenv(3)
- getutxid(3)
- pthread_mutexattr_getpshared(3)
- scalbnl(3)
- atan2l(3)
- argz_count(3)
- rpmatch(3)
- timerfd_gettime(2)
- ualarm(3)
- pthread_attr_init(3)
- vdprintf(3)
- pthread_cancel(3)
- fflush(3)
- setkey_r(3)
- mbstowcs(3)
- mremap(2)
- strcasestr(3)
- hcreate_r(3)
- siginterrupt(3)
- offsetof(3)
- atan(3)
- wctomb(3)
- getutent(3)
- significand(3)
- arm_fadvise64_64(2)
- dremf(3)
- wcswidth(3)
- syscall(2)
- rintf(3)
- bswap_64(3)
- pthread_attr_getschedparam(3)
- lroundf(3)
- timegm(3)
- posix_fadvise(2)
- getrlimit(2)
- svc_freeargs(3)
- xdr_enum(3)
- hcreate(3)
- ptrace(2)
- backtrace_symbols_fd(3)
- fetestexcept(3)
- ccosh(3)
- htole32(3)
- kexec_load(2)
- fallocate(2)
- timer_gettime(2)
- tgammaf(3)
- errno(3)
- sched_get_priority_max(2)
- xdr_getpos(3)
- vwprintf(3)
- ssetmask(2)
- ether_ntoa(3)
- waitpid(2)
- sched_getattr(2)
- inotify_init(2)
- fma(3)
- gnu_get_libc_version(3)
- svctcp_create(3)
- wcstombs(3)
- gethostname(2)
- strerror_r(3)
- sigismember(3)
- fgetws_unlocked(3)
- hash(3)
- circleq(3)
- getrpcbynumber_r(3)
- pthread_cond_timedwait(3)
- uname(2)
- fgetc_unlocked(3)
- mq_open(3)
- cosl(3)
- rewinddir(3)
- nextdown(3)
- longjmp(3)
- execv(3)
- iconv_open(3)
- xencrypt(3)
- ctermid(3)
- isgraph_l(3)
- move_pages(2)
- isunordered(3)
- msgsnd(2)
- rt_sigtimedwait(2)
- syncfs(2)
- mlockall(2)
- pthread_getschedparam(3)
- lsetxattr(2)
- getutid_r(3)
- log1pl(3)
- catanf(3)
- passwd2des(3)
- iconv_close(3)
- aligned_alloc(3)
- sched_setscheduler(2)
- gmtime(3)
- __free_hook(3)
- acoshf(3)
- mtrace(3)
- resolver(3)
- clog10f(3)
- sethostname(2)
- pthread_attr_setguardsize(3)
- tuxcall(2)
- atanh(3)
- ispunct_l(3)
- svcudp_bufcreate(3)
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- pthread_detach(3)
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Package: manpages-dev
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apt-get install manpages-dev
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clearenv
НАИМЕНОВАНИЕБИБЛИОТЕКА
ОБЗОР
ОПИСАНИЕ
ВОЗВРАЩАЕМОЕ ЗНАЧЕНИЕ
АТРИБУТЫ
СТАНДАРТЫ
ИСТОРИЯ
ПРИМЕЧАНИЯ
СМОТРИТЕ ТАКЖЕ
ПЕРЕВОД
НАИМЕНОВАНИЕ
clearenv - очищает окружение
БИБЛИОТЕКА
Стандартная библиотека языка C ( libc , -lc )
ОБЗОР
#include <stdlib.h>
int clearenv(void);
Требования макроса тестирования свойств для glibc (см. feature_test_macros (7)):
clearenv
():
/* glibc >= 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE
ОПИСАНИЕ
Функция clearenv () очищает окружение от всех пар имя-значение и устанавливает значение внешней переменной environ равным NULL. После этого вызова новые переменные можно добавлять в окружение с помощью putenv (3) и setenv (3).
ВОЗВРАЩАЕМОЕ ЗНАЧЕНИЕ
Функция clearenv () возвращает ноль при успешном выполнении и ненулевое значение при ошибках.
АТРИБУТЫ
|
Описание терминов данного раздела смотрите в attributes (7). |
СТАНДАРТЫ
putenv ()
POSIX.1-2008.
clearenv ()
Отсутствуют.
ИСТОРИЯ
putenv ()
glibc 2.0. POSIX.1-2001.
clearenv ()
glibc 2.0.
Есть в различных версиях UNIX (DG/UX, HP-UX, QNX, …) В POSIX.9 (привязки для FORTRAN77). В POSIX.1-1996 функции clearenv () и putenv () не приняты, но указано, что они войдут в следующие версии стандарта (смотрите §B.4.6.1). Однако, в POSIX.1-2001 добавлена только putenv (), а clearenv () — отклонена.
ПРИМЕЧАНИЯ
В системах, где clearenv () отсутствует, присваивайте
environ = NULL;
самостоятельно.
Функция clearenv () может пригодиться в приложениях, которые для безопасности полностью контролирую окружение, передаваемое программам, запускающимся посредством exec (3). Для этого приложение сначала очищает окружение, а затем добавляет выборочные переменные окружения.
Заметим, что главным свойством clearenv () является присвоение значения указателю environ (7); эта функция не стирает содержимое буферов, содержащих само окружение.
В справочных страницах DG/UX и Tru64 написано: если environ изменялась не с помощью функций putenv (3), getenv (3) или clearenv (), то clearenv () возвратит ошибку и окружение процесса не будет изменено.
СМОТРИТЕ ТАКЖЕ
getenv (3), putenv (3), setenv (3), unsetenv (3), environ (7)
ПЕРЕВОД
Русский перевод этой страницы руководства разработал(и) Azamat Hackimov <azamat.hackimov@gmail.com>, Dmitriy S. Seregin <dseregin@59.ru>, Dmitry Bolkhovskikh <d20052005@yandex.ru>, Katrin Kutepova <blackkatelv@gmail.com>, Yuri Kozlov <yuray@komyakino.ru>, Иван Павлов <pavia00@gmail.com> и Kirill Rekhov <krekhov.dev@gmail.com>
Этот перевод является свободной программной документацией; он распространяется на условиях общедоступной лицензии GNU (GNU General Public License - GPL, https://www.gnu.org/licenses/gpl-3.0.html версии 3 или более поздней) в отношении авторского права, но БЕЗ КАКИХ-ЛИБО ГАРАНТИЙ.
Если вы обнаружите какие-либо ошибки в переводе этой страницы руководства, пожалуйста, сообщите об этом разработчику(ам) по его(их) адресу(ам) электронной почты или по адресу списка рассылки русских переводчиков .